SELECT 
  cscart_products_categories.product_id, 
  GROUP_CONCAT(
    IF(
      cscart_products_categories.link_type = "M", 
      CONCAT(
        cscart_products_categories.category_id, 
        "M"
      ), 
      cscart_products_categories.category_id
    )
  ) AS category_ids, 
  product_position_source.position AS position 
FROM 
  cscart_products_categories 
  INNER JOIN cscart_categories ON cscart_categories.category_id = cscart_products_categories.category_id 
  AND cscart_categories.storefront_id IN (0, 1) 
  AND (
    cscart_categories.usergroup_ids = '' 
    OR FIND_IN_SET(
      0, cscart_categories.usergroup_ids
    ) 
    OR FIND_IN_SET(
      1, cscart_categories.usergroup_ids
    )
  ) 
  AND cscart_categories.status IN ('A', 'H') 
  LEFT JOIN cscart_products_categories AS product_position_source ON cscart_products_categories.product_id = product_position_source.product_id 
  AND product_position_source.category_id = 7197 
WHERE 
  cscart_products_categories.product_id IN (
    97482, 97483, 97484, 97485, 97486, 97487, 
    97488, 97489, 97490, 97491, 97492, 
    97493, 97494, 97495, 97496, 97497, 
    97498, 97499, 97500, 97501, 97502, 
    97503, 97504, 97505, 97525, 97526, 
    97527, 97528, 97529, 97530, 97531, 
    97532, 97533, 97628, 98036, 98037, 
    98038, 98229, 98230, 98231, 98232, 
    98233, 98324, 98325, 98326, 98414, 
    98415, 98416, 98502, 98882, 98883, 
    98884, 98885, 99068, 99069, 99070, 
    99071, 99072, 99073, 99074, 99075, 
    99076, 99077, 99078, 99079, 99080, 
    99081, 99082, 99083, 99084, 99085, 
    99086, 99087, 99088, 99089, 99090, 
    99091, 99092, 99093, 99094, 99095, 
    99096, 99097, 99098, 99099, 99100, 
    99101, 99102, 99103, 99104, 99105, 
    99106, 99107, 99108, 99109, 99114
  ) 
GROUP BY 
  cscart_products_categories.product_id

Query time 0.01605

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "91.20"
    },
    "grouping_operation": {
      "using_filesort": false,
      "nested_loop": [
        {
          "table": {
            "table_name": "cscart_products_categories",
            "access_type": "range",
            "possible_keys": [
              "PRIMARY",
              "link_type",
              "pt"
            ],
            "key": "pt",
            "used_key_parts": [
              "product_id"
            ],
            "key_length": "3",
            "rows_examined_per_scan": 101,
            "rows_produced_per_join": 101,
            "filtered": "100.00",
            "using_index": true,
            "cost_info": {
              "read_cost": "10.40",
              "eval_cost": "10.10",
              "prefix_cost": "20.50",
              "data_read_per_join": "1K"
            },
            "used_columns": [
              "product_id",
              "category_id",
              "link_type"
            ],
            "attached_condition": "(`nuie_scalesta_net`.`cscart_products_categories`.`product_id` in (97482,97483,97484,97485,97486,97487,97488,97489,97490,97491,97492,97493,97494,97495,97496,97497,97498,97499,97500,97501,97502,97503,97504,97505,97525,97526,97527,97528,97529,97530,97531,97532,97533,97628,98036,98037,98038,98229,98230,98231,98232,98233,98324,98325,98326,98414,98415,98416,98502,98882,98883,98884,98885,99068,99069,99070,99071,99072,99073,99074,99075,99076,99077,99078,99079,99080,99081,99082,99083,99084,99085,99086,99087,99088,99089,99090,99091,99092,99093,99094,99095,99096,99097,99098,99099,99100,99101,99102,99103,99104,99105,99106,99107,99108,99109,99114))"
          }
        },
        {
          "table": {
            "table_name": "product_position_source",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY",
              "pt"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "category_id",
              "product_id"
            ],
            "key_length": "6",
            "ref": [
              "const",
              "nuie_scalesta_net.cscart_products_categories.product_id"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 101,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "25.25",
              "eval_cost": "10.10",
              "prefix_cost": "55.85",
              "data_read_per_join": "1K"
            },
            "used_columns": [
              "product_id",
              "category_id",
              "position"
            ]
          }
        },
        {
          "table": {
            "table_name": "cscart_categories",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY",
              "c_status",
              "p_category_id"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "category_id"
            ],
            "key_length": "3",
            "ref": [
              "nuie_scalesta_net.cscart_products_categories.category_id"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 5,
            "filtered": "5.00",
            "cost_info": {
              "read_cost": "25.25",
              "eval_cost": "0.51",
              "prefix_cost": "91.20",
              "data_read_per_join": "13K"
            },
            "used_columns": [
              "category_id",
              "usergroup_ids",
              "status",
              "storefront_id"
            ],
            "attached_condition": "((`nuie_scalesta_net`.`cscart_categories`.`storefront_id` in (0,1)) and ((`nuie_scalesta_net`.`cscart_categories`.`usergroup_ids` = '') or (0 <> find_in_set(0,`nuie_scalesta_net`.`cscart_categories`.`usergroup_ids`)) or (0 <> find_in_set(1,`nuie_scalesta_net`.`cscart_categories`.`usergroup_ids`))) and (`nuie_scalesta_net`.`cscart_categories`.`status` in ('A','H')))"
          }
        }
      ]
    }
  }
}